$OpenBSD: patch-src_celengine_astro_cpp,v 1.3 2009/07/20 10:35:20 ajacoutot Exp $
--- src/celengine/astro.cpp.orig	Mon Jul 20 11:59:23 2009
+++ src/celengine/astro.cpp	Mon Jul 20 11:59:41 2009
@@ -522,7 +522,7 @@ const char* astro::Date::toCStr(Format format) const
     cal_time.tm_sec = (int)seconds;
     cal_time.tm_wday = wday;
     cal_time.tm_gmtoff = utc_offset;
-#if defined(TARGET_OS_MAC) || defined(__FreeBSD__)
+#if defined(TARGET_OS_MAC) || defined(__FreeBSD__) || defined(__OpenBSD__)
     // tm_zone is a non-const string field on the Mac and FreeBSD (why?)
     cal_time.tm_zone = const_cast<char*>(tzname.c_str());
 #else
